Daily Sunspot Evaluation
Observation Sheet Monday, 18 March 1985
There is no typed record for this day. The values below were read by computer from the table on the sheet; when in doubt, see the drawing. Details →
- Number of groups (g)
- 2
- Number of spots (f)
- 9
- Relative number (R)
- 29
- Observer
- TS
- Reading
- all checks consistent
- File
- 19850318.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 7 | -12 | 28E | 359 | 25E | 5.5 | |
| 2 | ARX – 2 | -11 | 50E | 337 | 47E | 2.425 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.